package com.sky.annotation;

import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.time.LocalDateTime;

/**
 * @author lining
 * @date 2024/10/23 15:48
 * @description: TODO
 */
@Component
@Aspect
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.dao.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public  void autoFillPointCut(){}


    @Before("autoFillPointCut()")
    public void autoFill(JoinPoint joinPoint){
        //获得签名
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        //获得注解
        AutoFill autoFill = signature.getMethod().getAnnotation(AutoFill.class);

        //数据库操作类型
        OperationType value = autoFill.value();

        //获得被拦截方法的参数
        Object[] args = joinPoint.getArgs();

        if (args == null || args.length == 0){
            return;
        }
        Object entity = args[0];

        LocalDateTime now = LocalDateTime.now();
        Long currentId = BaseContext.getCurrentId();
        if (value == OperationType.INSERT){
            try {
                Method setCreateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_USER, Long.class);
                Method setCreateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_CREATE_TIME, LocalDateTime.class);
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);

                setCreateUser.invoke(entity,currentId);
                setCreateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);
                setUpdateTime.invoke(entity,now);
            }catch (Exception e){
                e.printStackTrace();
            }
        }else if (value == OperationType.UPDATE){
            try {
                Method setUpdateUser = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_USER, Long.class);
                Method setUpdateTime = entity.getClass().getDeclaredMethod(AutoFillConstant.SET_UPDATE_TIME, LocalDateTime.class);

                setUpdateTime.invoke(entity,now);
                setUpdateUser.invoke(entity,currentId);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        log.info("开始进行公共字段自动填充");
    }
}
